Average primetime ratings for live and same-day viewing among 18-49-year-olds have slumped by...

Average primetime ratings for live and same-day viewing among 18-49-year-olds have slumped by over 10% for ABC (DIS), CBS (CBS) and Fox (NWS) this season, UBS finds. However, Comcast's NBC is up 22%. TV execs attribute the fall to consumers watching shows at their own convenience, although Disney CEO Bob Iger admits that the absence of "new, big, real, buzz-worthy hits" might have something to do with it.